[Ocfs2-devel] [PATCH 05/12] ocfs2/dlm: Dump the dlm state in a debugfs file

[Joel Becker]

On Tue, Mar 04, 2008 at 04:49:53PM -0800, Sunil Mushran wrote:
> This patch dumps the dlm state (dlm_ctxt) into a debugfs file.

> Useful for debugging.
> +/* files in subroot */
> +int dlm_debug_init(struct dlm_ctxt *dlm)
> +{
> +#ifdef CONFIG_DEBUG_FS
> +	struct dlm_debug_ctxt *dc = dlm->dlm_debug_ctxt;
> +
> +	/* for dumping dlm_ctxt */
> +	dc->debug_state_dentry = debugfs_create_file(DLM_DEBUGFS_DLM_STATE,
> +						     S_IFREG|S_IRUSR,
> +						     dlm->dlm_debugfs_subroot,
> +						     dlm, &debug_state_fops);
> +	if (!dc->debug_state_dentry) {
> +		mlog_errno(-ENOMEM);
> +		goto bail;
> +	}
> +
> +	dlm_debug_get(dc);
> +	return 0;
> +
> +bail:
> +	dlm_debug_shutdown(dlm);
> +	return -ENOMEM;
> +#endif
> +	return 0;
> +}

	Here again you could move the no-debugfs case to an inline in
dlmdebug.h.

Joel

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Joel Becker
Principal Software Developer
Oracle
E-mail: joel.becker at oracle.com
Phone: (650) 506-8127